solve this without a calculator, i know 90% will get it wrong

SOLUTION
IF 3 CUP CAKE = 9
THEN EACH CUP CAKE = 3
ALSO IF 2 SLICED CAKE + 1 CUP CAKE = 25
THEN EACH SLICE CAKE =11
IF 2 SLICED CAKE + 1 DOUGHNOT =24
THEN 1 DOUGHNOT =2
ANSWER
3+2+11=16

IF 3 CUP CAKE = 9
THEN EACH CUP CAKE = 3
ALSO IF 2 SLICED CAKE + 1 CUP CAKE = 25
THEN EACH SLICE CAKE =11
IF 2 SLICED CAKE + 1 DOUGHNOT =24
THEN 1 DOUGHNOT =2
3+2+11=16